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Volume 46, Issue 1
1 February 1999
Anti-Corrosion Methods and Materials Cover Image for Volume 46, Issue 1
Editors
Yu Yan
Yu Yan
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Review Article| February 01 1999

Synergistic effect of 1‐hydroxyethane‐1, 1‐diphosphonic acid and Zn2+ on the inhibition of corrosion of mild steel in neutral aqueous environment

;
Susai Rajendran
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;
B.V. Apparao
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N. Palaniswamy
N. Palaniswamy is with the Corrosion Science and Engineering Division, Central Electrochemical Research Institute, Karaikudi, Tamilnadu, India
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Author & Article Information
Publisher: Emerald Publishing
Online ISSN: 1758-4221
Print ISSN: 0003-5599
© MCB UP Limited
1999
Anti-Corrosion Methods and Materials (1999) 46 (1): 23–28.
https://doi.org/10.1108/00035599910252721

The formulation consisting of 300ppm 1‐hydroxyethane‐1, 1‐diphosphonic acid (HEDP) and 50ppm Zn2+ offered 99 per cent inhibition to the corrosion of mild steel immersed in neutral aqueous environment containing 60ppm chloride. This formulation functioned as a mixed inhibitor. The protective film was found to be luminescent and to consist of Fe2+‐HEDP complex and Zn(OH)2.

Keywords: Corrosion, Mild steel, Surface films
© MCB UP Limited
1999
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